Make artist search work with external images

app/models/api_image.rb

@@ -98,12 +98,18 @@ class APIImage < ApplicationRecord
       where(id: APIImage.from("unnest(artists) AS artist").where("artist LIKE ?", name.to_escaped_for_sql_like))
     end
 
+    def external_artists_like(name)
+      where(id: ExternalAPIImage.from("external_api_images, jsonb_array_elements_text(cached_data->'tags'->'artist') AS artist").where("artist LIKE ?", name.to_escaped_for_sql_like).select("api_image_id"))
+    end
+
     def search(params)
       q = super
       q = q.attribute_matches(:category, params[:category])
       q = q.attribute_matches(:original_url, params[:original_url])
       q = q.attribute_matches(:is_viewable, params[:viewable])
-      q = q.artists_like(params[:artist]) if params[:artist].present?
+      if params[:artist].present? # rubocop:disable Style/IfUnlessModifier
+        q = q.artists_like(params[:artist]).or(external_artists_like(params[:artist]))
+      end
       if params[:md5].present? # rubocop:disable Style/IfUnlessModifier
         q = q.attribute_matches(:id, params[:md5]).or(q.where(id: ExternalAPIImage.where("cached_data->'file'->>'md5' = ?", params[:md5]).select("api_image_id")))
       end

app/views/yiff_rest/api_v2/images/_external_image.html.erb

@@ -9,7 +9,7 @@
     <% end %>
   <% end %>
 </td>
-<td><%= external.artists.join(", ") %></td>
+<td><%= external.artists.map { |art| link_to(art, yiff_rest_api_v2_manage_images_path(search: @sp.merge(artist: art))) }.join(", ").html_safe %></td>
 <td>
   <ul class="details">
     <li>Resolution: <b><%= external.width %>x<%= external.height %></b></li>

app/views/yiff_rest/api_v2/images/_image.html.erb

@@ -5,7 +5,7 @@
     <%= image_tag(image.url, class: "img-fluid img-thumbnail") %>
   <% end %>
 </td>
-<td><%= image.artists.join(", ") %></td>
+<td><%= image.artists.map { |art| link_to(art, yiff_rest_api_v2_manage_images_path(search: @sp.merge(artist: art))) }.join(", ").html_safe %></td>
 <td>
   <ul class="details">
     <li>Resolution: <b><%= image.width %>x<%= image.height %></b></li>